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Browsing by Author "Correa Restrepo, Gloria Jaqueline"

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    Calibración y validación del muestreador pasivo seleccionado, para la determinación de mercurio y metales pesados, simulando las condiciones ambientales reales en el laboratorio
    (Corporación Universitaria Lasallista, 2015) Restrepo Acevedo, Ana María; Correa Restrepo, Gloria Jaqueline
    Passive sampling systems has been developed in an attempt to provide a technique capable of continuously monitoring the levels of certain contaminants in water, avoiding the drawbacks of using living organisms and sampling techniques for points. The passive sampling applied to waters presents a more recent history than the atmospheric sampling, who were apply since 1970 for determining air quality in industrial areas. In both cases the principle that governing is the same: the flow of molecules from the medium to be sampled at half collector as a result of a concentration gradient between the two (Górecki y Namiésnik., 2002). The flow is maintain until equilibrium is found or until the user terminates the sampling session. Species that you want to monitor, trapped or held within the medium collector or acceptor phase and are then desorbed and analyzed. These devices enable continuous monitoring of the surrounding environment even if they are at trace or ultratrace level. (Aguilar, 2010). In order to implement this technology, the Corporación Universitaria LaSallista is running from 2013, with the support of COLCIENCIAS the research project entitled "Implementation of liabilities for monitoring mercury and heavy metals at trace level in reservoirs samplers: A strategy for ensuring water quality. " The purpose of this project is to evaluate the effectiveness of the prototype designed call Turbulent Boundary Layer (TBL) Sampler, to monitor toxic metals, particularly copper, mercury and manganese in the simulation conditions established in the laboratory according to the results obtained using the atomic absorption equipment, compared with the monitoring system call Chemcatcher.